Резиновый трехколоночный макет (position left right margin)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="3">
</head>
<body>
<div class="layout">
<div class="column1">column1</div>
<div class="column2">column2</div>
<div class="column3">column3</div>
</div>
</body>
</html>
.layout {
position: relative;
}
.column1, .column2, .column3 {
position: absolute;
height: 500px;
}
.column1 {
left: 0;
right: 200px;
margin-right: 50%;
background: #ede;
}
.column2 {
width: 50%;
right: 200px;
background: #ced;
}
.column3 {
width: 200px;
right: 0;
background: #dde;
}